NXP Semiconductors LPC24XX UM10237 - Manual (Page 179)

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User manual Rev. 04 — 26 August 2009 179 of 792
NXP Semiconductors
UM10237
Chapter 9: LPC24XX Pin connect
[1] Reset Value reflects the data stored in used bits only. It does not include reserved bits content.
Pin control module register reset values
On power-on reset and BOD reset, all registers in this module are reset to '0'.
On external reset and watchdog reset:
• The corresponding bits for P0[31:0], P1[31:0], P2[13:0] are always reset to '0'.
• For all the other bits:
– if the EMC_Reset_Disable = 1 ( see Section 3–3.4 “Other system controls and
status flags” ), they retain their values for external memory interface
– else if the EMC_Reset_Disable = 0, they are reset to '0'.
5.1 Pin Function Select register 0 (PINSEL0 - 0xE002 C000)
The PINSEL0 register controls the functions of the pins according to the settings listed in
Table 9–130 . The direction control bit in the IO0DIR register (or the FIO0DIR register if the
enhanced GPIO function is selected for port 0) is effective only when the GPIO function is
selected for a pin. For other functions, direction is controlled automatically.
LCD functions are available in LPC2470/78 only and are selected in Table 9–145 .
PINSEL6 Pin function select register 6 R/W 0x0000 0000 0xE002 C018
PINSEL7 Pin function select register 7 R/W 0x0000 0000 0xE002 C01C
PINSEL8 Pin function select register 8 R/W 0x0000 0000 0xE002 C020
PINSEL9 Pin function select register 9 R/W 0x0000 0000 0xE002 C024
PINSEL10 Pin function select register 10 R/W 0x0000 0000 0xE002 C028
PINSEL 11 Pin function select register 11
(LPC247x only) R/W 0x0000 0000 0xE002 C02C
PINMODE0 Pin mode select register 0 R/W 0x0000 0000 0xE002 C040
PINMODE1 Pin mode select register 1 R/W 0x0000 0000 0xE002 C044
PINMODE2 Pin mode select register 2 R/W 0x0000 0000 0xE002 C048
PINMODE3 Pin mode select register 3 R/W 0x0000 0000 0xE002 C04C
PINMODE4 Pin mode select register 4 R/W 0x0000 0000 0xE002 C050
PINMODE5 Pin mode select register 5 R/W 0x0000 0000 0xE002 C054
PINMODE6 Pin mode select register 6 R/W 0x0000 0000 0xE002 C058
PINMODE7 Pin mode select register 7 R/W 0x0000 0000 0xE002 C05C
PINMODE8 Pin mode select register 8 R/W 0x0000 0000 0xE002 C060
PINMODE9 Pin mode select register 9 R/W 0x0000 0000 0xE002 C064
Table 129. Summary of pin connect block registers
Name Description Access Reset Value [1] Address
Table 130. Pin function select register 0 (PINSEL0 - address 0xE002 C000) bit description
PINSEL0 Pin
name
Function when
00 Function when 01 Function
when 10 Function
when 11 Reset
value
1:0 P0[0] GPIO Port 0.0 RD1 TXD3 SDA1 00
3:2 P0[1] GPIO Port 0.1 TD1 RXD3 SCL1 00
5:4 P0[2] GPIO Port 0.2 TXD0 Reserved Reserved 00